Field
The disclosed embodiments relate generally to the delivery of Bluetooth encoded audio signals to a user using a hearing aid device.
The disclosed embodiments present a hearing aid enabled with a local area receiver or transceiver configured for operation with a mobile communication device such as a mobile phone or radio. This allows the user to use the hearing aid device for its traditional amplification utility and further benefit form the device's enablement to automatically or selectively switch the audio feed to an incoming call received by the user's mobile phone or radio. As the call comes in and is engaged by the user, the phone's Bluetooth transceiver sends a signal, the hearing aid detects the signal and either selectively or automatically switches its audio input source from the microphone to the digital signal decoded and regenerated to an audio signal through its Bluetooth receiver. In another embodiment, the described device employs a mixer mixing the microphone signal and the audio signal decoded and regenerated through its Bluetooth receiver circuit. In another embodiment, one signal is attenuated with respect to the other. Yet in other embodiments the disclosed device comprises a microphone for return communication to the communication device.
Other devices, systems, methods, features and advantages of the embodiments will be or will become apparent to one having ordinary skill in the art upon examination of the following figures, detailed description and the claims. It is intended that all such additional systems, articles of manufacture, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims.
The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. In the figures, like reference numerals designate corresponding parts throughout the different views.
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Bluetooth protocol is a low power, relatively short distance, wireless communication protocol standardized by the industry. It allows wireless communications between two or more devices. Once the device id is linked with a transmitter/transceiver, the two devices are enabled to communicate with each other, either in a one way or two way communications. The devices and methods described in this specification rely on local area communications. Although described in the context of the Bluetooth protocol, the reader will recognize that the same principles may be applied to adopt or use other standardized or proprietary local area network protocols. As such, reference to the Bluetooth protocol is not intended to be limiting, but exemplary.
One of the disclosed embodiments provides a Bluetooth enabled hearing aid 201.
Described hearing aid 201 is configured to normally function as a typical hearing aid, converting incoming audio signals to electrical signals (microphone signals) via microphone 107; signal passing through switch 209 in it's A position; amplifying the signal via amplifier 111 and displaying the signal through audio transducer 113. However, when a Bluetooth signal is detected via antenna 215 and decoder 217 determines that it is linked to the transmitter, the signal is decoded by decoder 217. The decoded digital bytes/words are then passed on to an audio digital-to-analog converter (DAC) 219. DAC 219 provides a decoded analog signal (decoder signal), which is selectively coupled to amplifier 111 via switch 209 in the B position controlled by decoder 217 via control line 223 or the user via a control 225. In the described embodiment, line 223 changes states in the presence of a Bluetooth communication linked to decoder 217, thereby controlling switch 209 to change from it's A position to its B position. Accordingly, the signals generated by the ambient audio detected by microphone 107 are shunned, or attenuated while signals decoded by decoder 217 are passed through, amplified and provided to transducer 113. One will also note that the embodiments described throughout illustrate and describe the switching functionality in a form of a switch. However, the same functionality may also be achieved vis-a-vis solid state devices, attenuators, mixers, software or other means of channeling a signal, while substantially attenuating or eliminating the other. And for example, throughout the embodiments described herein, in the embodiment where the microphone signal is attenuated with respect to the decoder signal, such attenuation could be preset to various levels, including without limitation −20 dB to −30 dB, which equals to about 3% to 10% of the original level.
Conversely, using the embodiment illustrated in
Moreover, also shown in
In an alternate embodiment of device 401, two way communications are enabled by employing second microphone 221 and by using a transceiver, which as above is designated in this specification as the same functional block 217. In this embodiment, in the presence of a Bluetooth communication with linked device 103, signal conditioner 227 is functionally enabled, conditioning, amplifying and/or digitizing electrical signals produced by microphone 221 and providing the same to transceiver 217. Accordingly, audio signals produced by and/or about the user are conditioned and/or digitized by conditioner 227 and thereafter encoded and transmitted by transceiver 217 vis-a-vis antenna 215 to device 103. In the absence of a linked Bluetooth communication microphone signals provided by microphone 221 are functionally shunned.
An alternate embodiment shown in
In the absence of a linked Bluetooth signal, microphone 107 generates electrical signals that are channeled through mixer 405 to amplifier 111, where these signals are amplified and displayed through transducer 113. In the presence of a linked Bluetooth communication with a device 103, transceiver 217 decodes the signal, provides the decoded digital signal to DAC 219, which converts it to an analog decoder signal. Mixer 405 is enabled via control line 223, which changes states in the presence of a linked Bluetooth communication. Mixer 405 mixes the signal incoming from DAC 219 and from microphone 107 and provides the mixed signal to amplifier 111. Amplified signal is then displayed through audio transducer 113.
The above embodiments may be configured wherein mixer 405 attenuates the signal from microphone 107 to provide greater significance to the incoming signal from device 103. Also as described above, in an alternate embodiment control 225 allows for variable or fixed attenuation levels and other controls of mixer/attenuator 405 and/or amplifier 111.
In the presence of a linked communication with device 103, the signals provided by microphone 107 are also amplified and/or digitized by signal conditioner 227 and the resulting signal is encoded by transceiver 217 for transmission to device 103. Accordingly, as the user speaks, his/her voice is sensed by microphone 107 and is transmitted to device 103. This embodiment may be configured with the functionality described for switch 303 or as shown in
Embodiments heretofore described are shown with user control 225. Such control may be integrated into the hearing aid devices. Control 225 may be characterized by mechanical or soft on/off control, selection switch, or a variable attenuation control. The on/off functionality 225 is useful for having control of automatic functionality described above. For example, the user may choose not to hear or mute the incoming signal from either microphone(s) 107 or 221 or from decoder/transducer 217; or control the volume of the signal by adjusting the gain of amplifier 111. The attenuation control 225 is particularly useful for selecting either a preset level of attenuation by selecting or sequentially toggling through the choices, or in the alternative by variably selecting the proportionality of signal level of the incoming and surrounding audio signals.
Notably, throughout the described embodiments functional blocks are demonstrated for illustrative purposes. However, the functionality of these blocks may be achieved through different means. For example, all or some of the components may be integrated into one or more of the other components. For example, functionality of switch 209, amplifier 111, DAC 219, and/or signal conditioner 227 may be characterized by solid state device(s), or software implementation, which may be integrated into decoder/transceiver 217 or microphones 107 and/or 221 or any other functional block, whether illustrated herein or not. Nonetheless, the intended functionality and results would remain the same, whether achieved through static components, solid state components, and/or software.
While the present description has been described herein with reference to particular embodiments thereof, these have been described by way of example only, and not by limitation. A degree of latitude or modification, various changes and substitutions are intended in the foregoing disclosure. It will be appreciated that in some instances some features of the embodiments will be employed without corresponding use of other features without departing from the spirit and scope of the invention as set forth and It will be apparent to those of ordinary skill in the art that many alternative embodiments, applications and implementations are possible and are within the scope of this invention.
This application claims priority to co-pending United States provisional application entitled, “Bluetooth Enable Hearing Aid.” having Ser. No. 60/879711, having a filing date of Jan. 10, 2007, which application is entirely incorporated herein by reference.
Number | Date | Country | |
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60879711 | Jan 2007 | US |